CN1241715C - Sanding hand machine tool - Google Patents
Sanding hand machine tool Download PDFInfo
- Publication number
- CN1241715C CN1241715C CNB028025660A CN02802566A CN1241715C CN 1241715 C CN1241715 C CN 1241715C CN B028025660 A CNB028025660 A CN B028025660A CN 02802566 A CN02802566 A CN 02802566A CN 1241715 C CN1241715 C CN 1241715C
- Authority
- CN
- China
- Prior art keywords
- sand sheet
- jaw
- grinding tool
- bearing part
- held grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims description 118
- 238000000227 grinding Methods 0.000 claims description 34
- 238000003801 milling Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 abstract 1
- UPMXNNIRAGDFEH-UHFFFAOYSA-N 3,5-dibromo-4-hydroxybenzonitrile Chemical compound OC1=C(Br)C=C(C#N)C=C1Br UPMXNNIRAGDFEH-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
- B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A sanding hand machine tool, especially a pad sander (10), comprises a plate-shaped abrasive disk support (14), on the working surface (15) of which an abrasive disk (16) is supported. The ends (17, 19) of the abrasive disk are retained on the abrasive disk support (14) by means of clamping elements (20, 23) disposed thereon. The clamping elements (20, 23) used are levers that have a swiveling axis disposed on the top surface of the abrasive disk support. On one end, said levers have a clamping jaw (22) supported on the abrasive disk support (14). According to the inventive sanding hand machine tool, the abrasive disk can be reliably clamped on the abrasive disk support and easily exchanged. For mounting the sanding hand machine tool 10), the abrasive disk (16) can be inserted between the clamping jaws (22) and the abrasive disk support (14) against an elastic pretension of the clamping jaw (22) and is secured therein against the direction of insertion to an increasing extent that is proportional to the tensile force exerted.
Description
Technical field
The present invention relates to a kind of motorised hand-held grinding tool, especially super grinding milling drum, it has a board-like sand sheet bearing part, on its working face, can support a sand sheet, the sand sheet end that wherein is positioned at end opposite can be clamped on the sand sheet bearing part by the clamping device that is arranged on the sand sheet bearing part, one of them has the lever that is arranged on the rotating shaft on the sand sheet bearing part as clamping device, is provided with the jaw that can be bearing on the sand sheet bearing part at an end of this lever.
Background technology
A kind of super grinding milling drum that is provided with the grinding dish that is used to receive the replaceable sand sheet is disclosed by british patent document GB 23 22 582, the sand sheet with its rear support on the bottom surface of grinding dish and can be fixed and be clamped on its upper side.
At this, for geometrical clamp tight sand sheet, the operator must make with the hands, and hand held power machine is remained on the fixing liner as far as possible regularly.Wherein be inserted into a sand sheet end in the jaw opened and the groove between the sand sheet bearing part upper side and this jaw remained on the off-position with opening, till insert fully this sand sheet end with the another hand with a hand.It is will be by spring force closed and arrive its clamped position after unclamping this jaw, in that it fixes to clamp sand sheet end on a sloping bearing surface on the sand sheet bearing part upside on this position.At this, the sand sheet can then be tensioned to a certain degree, drives sand sheet end thus because the jaw that should rotatable suspend outside roll extrusion on sloping bearing surface reaches.
Formerly dispose in the same way for another sand sheet end, wherein clamping force and again tensile force be restricted.
Summary of the invention
According to the present invention, a kind of motorised hand-held grinding tool has been proposed, has a board-like sand sheet bearing part, on its working face, can support a sand sheet, the sand sheet end that wherein is positioned at end opposite can be clamped on the sand sheet bearing part by the clamping device that is arranged on the sand sheet bearing part, one of them has the lever that is arranged on the rotating shaft on the sand sheet bearing part and is used as clamping device, end at this lever is provided with the jaw that can be bearing on the sand sheet bearing part, wherein, for the motorised hand-held grinding tool of packing into, the elastic forepressure that the sand sheet can be resisted jaw is inserted between jaw and the sand sheet bearing part, wherein jaw can be only by being opened with contacting of sand sheet, when moving against direction of insertion, sand sheet end can automatically be braked by jaw owing to this motion.
Motorised hand-held grinding tool of the present invention has its advantage, promptly compares with known milling drum so far, and packing into of fresh sand sheet only need promptly can realize more convenient and more quickly with a hand.In addition, because clamping device allows the sand sheet forwards upwards to enter and do not have independent operation in the opposite direction and can not discharge at one, therefore just the sand sheet can be fixed, seamlessly be clamped on the sand sheet bearing part with one-handed performance.Here one-handed performance means, for put into and fixedly the sand sheet in fact only need a hand just can work effectively.The another hand during this period can be static or fixing hand held power machine, or it is pressed on the substrate.
Extend with the radius of curvature that increases by the exterior contour that makes jaw outwardly-bently, especially in the self-locking zone, so that clamping force is proportional to the pulling force ground increase of attempting to pull out the sand sheet, clamped sand sheet and its thickness are irrespectively, promptly thin and thick sand sheet will be clamped equally reliably.By fixing to clamp of sand sheet the gap between sand sheet and the sand sheet bearing part is limited.Therefore the oscillatory type of sand sheet bearing part is ground to move almost not have and is delivered on the sand sheet with skidding, the sand sheet is pressed on the workpiece grinds.
By making jaw have an exterior contour, its ultimate range that arrives rotating shaft is greater than the distance between rotating shaft and the sand sheet bearing part upper surface; And by jaw is bearing on the side of sand sheet bearing part by elasticity towards the edge of sand sheet bearing part with rotating bias voltage, automatically adjust high-clamping force between jaw and the sand sheet bearing part upper surface with regard to the simple configuration of available clamping device, servo-effect wherein appears, promptly be: along with the increase of sand sheet upper pulling force on against direction of insertion, clamping force always increases.Can make the sand sheet clamped in the anti-disconnected limit thus, and can automatically not get loose.
In order to discharge the sand sheet that is sandwiched, jaw can be by pressing key move against clamping direction, can make the sand sheet discharge and take off from motorised hand-held grinding tool especially simply by this measure.
Jaw is made up of flexible rubber type of material, can strengthen the servo-effect that is used to make the increase of sand sheet clamping force.
In addition, servo-effect is strengthened like this, makes that promptly the exterior contour sabre shape ground of jaw is crooked gradually.
Another advantage is: can clamp tensioning in other words by being moved into to improve simply in the clamping seam after the sand sheet clamps again, even wherein in the clamping device in case inserted a sand sheet end and apply big power on against direction of insertion and also can not pull out this end, unless operate a release key in advance.Sand sheet end is moved in the jaw the more, and then clamping area is bigger and clamping force is bigger.
Advantageously, a spring-loaded is on clamping device and to this clamping device bias voltage.
Advantageously, clamping device is set on the upper side of sand sheet bearing part and the sand sheet can be supported on its bottom surface.
Description of drawings
To describe embodiments of the invention in detail by accompanying drawing in the following description.Accompanying drawing is:
Fig. 1: represent summary side view according to motorised hand-held grinding tool of the present invention,
Fig. 2: the vertical view of the clamping device of this motorised hand-held grinding tool,
Fig. 3: the vertical view of single jaw details,
Fig. 4: the outside and the in-profile of the sabre shape of jaw,
Fig. 5: the vertical view of sand sheet bearing part,
Fig. 6: according to the side view of Fig. 5,
Fig. 7 a, b, c to 8a, b: the side view of the clamping device when the sand sheet is put into or discharged, and
Fig. 9: according to the schematic diagram of the jaw of the available key operation of motorised hand-held grinding tool of the present invention.
The specific embodiment
The summary side view of a motorised hand-held grinding tool 10 of expression among Fig. 1, this motorised hand-held grinding tool has a rectangular case 12, and this housing is simultaneously as the handgrip of controlling and guide motorised hand-held grinding tool 10.
A motor 11 that is located in the housing 12 is used for reciprocatingly driving a tabular sand sheet bearing part 14, and this sand sheet bearing part is arranged on the downside of housing 12.This sand sheet bearing part 14 carries a sand sheet 16 at it as on the bottom surface 15 of working face, and this sand sheet fills up on 18 at sand sheet bearing part 14 or its mill with its rear support.
On the upper side 13 of sand sheet bearing part 14, on opposite side, be equipped with the clamping device that constitutes as both arms clamp lever 20.This clamp lever 20 has a swing arm 21 and have a jaw 22 under this rotating shaft on the rotating shaft 24, this jaw is bearing on the stop surface 23 on sand sheet bearing part 14 upsides 13 with the exterior contour 27 that curves the sabre shape.Rotating shaft 24 is bearing in the rest pad 28 on sand sheet bearing part 14 upsides.
Supporting a stage clip 26 at each above the swing arm 21 and between the sand sheet bearing part that is not shown specifically in the housing 12, this stage clip always tries hard to make clamp lever 20 outwards to swing, jaw 22 is pressed on the stop surface 23 and geometrical clamp tight sand sheet end 17,19 thus.
In addition, swing arm 21 has one and stretches out the angle arm as what press key 121, can make the effect swing of its opposing stage clip 26 with finger pressure by this pressure key, so that jaw 22 lifts from stop surface 23, at this moment strengthen in the exterior contour 27 and the gap between the stop surface 23 of jaw 22, and can not have and take off sand sheet 16 difficultly.
At this, in two clamp lever 20, in the distance 30 between rotating shaft 24 and the stop surface 23 less than the distance 31 between the outermost point of rotating shaft 24 and exterior contour 27, thus by the position upper gripper jaw 22 of spring 26 precompressed (on the zone of self-locking) backstop on the stop surface 23 of sand sheet bearing part 14 upsides 13.Thus, do the time spent at the corresponding pullout forces of attempting to discharge sand sheet 16 and increasing clamping force on sand sheet 16 against moving into servo-effect ground on the direction.
On the other hand, stage clip 26 is only by bias voltage so slightly, be sand sheet 16 from the outside by lightly by just can making its opposing stage clip 26 on the exterior contour 27 that is pressed in jaw 22 and move against tension direction, own produce to be used to insert the required gap of sand sheet and to be easy to reach with a hand insertion push the sand sheet again.Jaw 22 has a skin of being done by rubber type of material flexible, great friction coefficient at least, and it can limit the relative motion between sand sheet 16 and the jaw 22 to a great extent.
When packing a sand sheet 16 into hand held power machine 10, with a hand by on the housing 12 that is held in this hand held power machine 10.With the another hand sand sheet end 17 is inserted and stop in the above described manner in first clamp lever, 20 sides.Then another sand sheet end 19 is at first inserted to reach with the same manner in another clamp lever 20 sides and fix, wherein make the tensioning of sand sheet and make its end 17 by wiping to rub along sand sheet 16 with hand, 19 can be moved between jaw 22 and the stop surface 23 further, when unclamping hand these ends can not deviate from again and sand sheet 16 on tensioning can not loosen yet.Available relatively little thus expending makes 16 tensionings of sand sheet and fixes to clamp on pad 18 or sand sheet bearing part 14.
Fig. 2 illustrates a vertical view of this motorised hand-held grinding tool 10 with the details of clamping device 20, and the details of the described clamping device of Fig. 1 relatively of Fig. 3 to 6 expression.
Fig. 7 a is illustrated in the motion stage that inserts the front clamp device.Insert the motion stage of back sand sheet in terminal location when the motion stage of clamping device and Fig. 7 c were illustrated in the cancellation clamping action when Fig. 7 b represented to insert sand sheet end 19.Wherein can see, in order to insert sand sheet 16, only need sand sheet end 19 is gently pressed from the side the exterior contour 27 of jaw 22, form a gap thus between jaw 22 and stop surface 23, sand sheet end enters this gap.At this, clamp lever 20 does not need individually to use hand operated.
Fig. 8 a and b represent the motion stage of clamp lever 20 when taking out sand sheet 16, wherein with hand, for example press...with one's finger to press on key 121 and make 24 rotations around the shaft of clamp lever 20 clockwise direction ground.At this, jaw 22 and exterior contour thereof lift from stop surface 23 in other words in this wise from sand sheet 16, promptly do not pull out sand sheet end 17,19 difficultly and can easily sand sheet 16 be taken off thus by can having in the gap that increases.
Fig. 9 represents the zoomed-in view of a clamp lever 20, in its axle 24 rest pads 228 that are installed on the sand sheet bearing part 14.Clamp lever 20 has a jaw 22, and it can be bearing on the stop surface 23, and one of them catches the tension spring 226 of swing arm 21 outermost end to try hard to jaw 22 is pulled to stop surface 23.The outermost end of swing arm 21 is provided with a hinge nest 222, has meshed the hinge head 322 of a key 221 therein.
Key 221 can be swung on the direction of direction arrow 333 around an axle 224 that remains in the rest pad 228 by finger presses, and clamp lever 20 is moved on its open position to take out clamped sand sheet.For key 221 is returned on its home position, between the housing 12 of the back side of key 221 and motorised hand-held grinding tool 10, be provided with a compression spring 227.
Claims (13)
1. motorised hand-held grinding tool, has a board-like sand sheet bearing part (14), on its working face (15), can support a sand sheet (16), wherein be positioned at the sand sheet end (17 of end opposite, 19) can be by the clamping device (20 that is arranged on the sand sheet bearing part, 23) be clamped on the sand sheet bearing part (14), one of them has the lever of the rotating shaft (24) that is arranged on the sand sheet bearing part (14) as clamping device (20,23), end at this lever is provided with the jaw (22) that can be bearing on the sand sheet bearing part (14), it is characterized in that:
For the motorised hand-held grinding tool of packing into (10), the elastic forepressure that sand sheet (16) can be resisted jaw (22) is inserted between jaw (22) and the sand sheet bearing part (14), wherein jaw (22) can be only by being opened with contacting of sand sheet (16), when moving against direction of insertion, sand sheet end can automatically be braked by jaw owing to this motion.
2. according to the motorised hand-held grinding tool of claim 1, it is characterized in that: jaw (22) can swingingly be supported around described rotating shaft (24); The exterior contour that reaches jaw (22) extends from this rotating shaft (24) beginning outwardly-bently, wherein diminishes towards the free end radius of curvature, so that clamping force is proportional to the pulling force ground increase of attempting to pull out sand sheet (16).
3. according to the motorised hand-held grinding tool of claim 1, it is characterized in that: be offset jaw (22) the back desirable sheet that shakes out (16) against clamping direction in advance.
4. according to one motorised hand-held grinding tool in the claim 1 to 3, it is characterized in that: jaw (22) has an exterior contour, it to the ultimate range of rotating shaft (24) greater than the distance between the upper surface of rotating shaft (24) and sand sheet bearing part (14); And jaw (22) is bearing on the face (13) of sand sheet bearing part (14) towards the edge elasticity of sand sheet bearing part (14) with rotating bias voltage.
5. according to the motorised hand-held grinding tool of one of claim 1 to 3 item, it is characterized in that: in order to discharge the sand sheet (16) that is sandwiched, jaw (22) can move to its off-position against the clamping direction.
6. according to the motorised hand-held grinding tool of claim 5, it is characterized in that: jaw (22) is made of flexible rubber type of material at least in part.
7. according to the motorised hand-held grinding tool of claim 6, it is characterized in that: a spring (26) is bearing in clamping device (20) and upward reaches this clamping device bias voltage.
8. according to the motorised hand-held grinding tool of claim 7, it is characterized in that: clamping device (20,23) is set on the upper side of sand sheet bearing part (14) and sand sheet (16) can be supported on its bottom surface.
9. according to the motorised hand-held grinding tool of one of claim 1 to 3, it is characterized in that: this motorised hand-held grinding tool is super grinding milling drum (10).
10. according to the motorised hand-held grinding tool of one of claim 1 to 3, it is characterized in that: described and contacting of sand sheet (16) are the contacts with one of sand sheet end (17,19).
11. the motorised hand-held grinding tool according to claim 4 is characterized in that: jaw (22) is bearing on the face (13) of sand sheet bearing part (14), vertically is supported under rotating shaft (24).
12. the motorised hand-held grinding tool according to claim 5 is characterized in that: jaw (22) can be by pressing key (121) to move to its off-position against the clamping direction.
13. the motorised hand-held grinding tool according to claim 5 is characterized in that: the effect that jaw (22) can be resisted a spring force moves to its off-position against the clamping direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10139546.9 | 2001-08-10 | ||
| DE10139546A DE10139546A1 (en) | 2001-08-10 | 2001-08-10 | Grinding tool machine has plate-type holder, clamps as lever with clamping jaw, swivel axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1464813A CN1464813A (en) | 2003-12-31 |
| CN1241715C true CN1241715C (en) | 2006-02-15 |
Family
ID=7695169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028025660A Expired - Fee Related CN1241715C (en) | 2001-08-10 | 2002-06-27 | Sanding hand machine tool |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6887143B2 (en) |
| EP (1) | EP1419031B1 (en) |
| CN (1) | CN1241715C (en) |
| DE (2) | DE10139546A1 (en) |
| WO (1) | WO2003015986A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10232055A1 (en) * | 2002-07-16 | 2004-02-05 | Robert Bosch Gmbh | Mechanical grinding machine, especially vibrating grinder, has housing, grinding disc holder, clamps as tongs and jaws moving on axle |
| DE10323640A1 (en) * | 2003-05-26 | 2004-12-16 | Robert Bosch Gmbh | Sander machine |
| US7112128B1 (en) * | 2005-04-29 | 2006-09-26 | 3M Innovative Properties Company | Sanding tool with protective clamping mechanism |
| US7591715B2 (en) * | 2005-08-11 | 2009-09-22 | 3M Innovative Properties Company | Sanding tool with sheet loading feature |
| US7134951B1 (en) * | 2005-12-28 | 2006-11-14 | Leon Jess M | Sheet holder for abrasive sheets |
| DE102006035977A1 (en) * | 2006-08-02 | 2008-02-07 | Robert Bosch Gmbh | Grinding hand tool with new grinding blade tension |
| EP2404701B1 (en) * | 2010-07-05 | 2013-05-29 | Techtronic Power Tools Technology Limited | Sander |
| CN102328280A (en) * | 2011-10-11 | 2012-01-25 | 吴江市三达五金工具厂 | Grinding tool |
| DE102011084591A1 (en) * | 2011-10-17 | 2013-04-18 | Robert Bosch Gmbh | Machine tools fixture |
| CN103170912A (en) * | 2013-01-22 | 2013-06-26 | 熊根稳 | Linear polishing machine |
| CN108160876A (en) * | 2017-12-26 | 2018-06-15 | 骆小艳 | A kind of furniture processing wind spring mould |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735241A (en) * | 1956-02-21 | Rubbing machine | ||
| US2242545A (en) * | 1940-03-27 | 1941-05-20 | Sundstrand Machine Tool Co | Rubbing machine |
| US2749679A (en) * | 1953-11-25 | 1956-06-12 | Nicholas T Anton | Shoes for rubbing devices |
| US2914889A (en) * | 1955-07-28 | 1959-12-01 | Sundstrand Corp | Clamping device |
| US3267622A (en) * | 1964-06-19 | 1966-08-23 | Rockwell Mfg Co | Abrasive pad structure for portable sanding machine |
| US4330964A (en) * | 1980-04-14 | 1982-05-25 | Evidio Martinez | Sanding device |
| IT1298433B1 (en) * | 1997-02-27 | 2000-01-10 | Bosch Gmbh Robert | PORTABLE ELECTRIC TOOL IN PARTICULAR GRINDER |
-
2001
- 2001-08-10 DE DE10139546A patent/DE10139546A1/en not_active Withdrawn
-
2002
- 2002-06-27 DE DE50204285T patent/DE50204285D1/en not_active Expired - Lifetime
- 2002-06-27 WO PCT/DE2002/002345 patent/WO2003015986A1/en active IP Right Grant
- 2002-06-27 CN CNB028025660A patent/CN1241715C/en not_active Expired - Fee Related
- 2002-06-27 US US10/398,059 patent/US6887143B2/en not_active Expired - Fee Related
- 2002-06-27 EP EP02742814A patent/EP1419031B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE10139546A1 (en) | 2003-02-20 |
| US6887143B2 (en) | 2005-05-03 |
| DE50204285D1 (en) | 2005-10-20 |
| WO2003015986A1 (en) | 2003-02-27 |
| EP1419031B1 (en) | 2005-09-14 |
| CN1464813A (en) | 2003-12-31 |
| US20040033767A1 (en) | 2004-02-19 |
| EP1419031A1 (en) | 2004-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060215 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |